package main

import (
	"fmt"
	"math"
)

func main() {
	fmt.Printf("Now you have %g problems.\n", math.Nextafter(3, 5))
	fmt.Printf("Now you have %g problems.\n", math.Nextafter(3, 2))
	fmt.Printf("Now you have %g problems.\n", math.Nextafter(3, 3))
}

//不理解math.Nextafter这个函数用途是什么
